Spectacle defroster



May 8, 1951 R. E. WERNER, SR

I SPECTACLE DEFROSTER Filed Oct. 26, 1949 I'enlar Patented May 8, 1951 SPECTACLE DEFROSTER Robert E. Werner, Sr., Olean, N. Y., assignor of forty-five per cent to Orville E. Hand, Olean,

Application October 26, 1949, Serial No. 123576 2 Claims.

l i This invention relates to new and useful improvements and structural refinements in defrosters, and the principal object of the invention is to provide a device of the character herein described, which may be Conveniently and effectively employed for the deirosting of spectacles, eyeglasses, and the like, when they become coated with mist upon entering a warm room from cold, outside atmosphere.

This objectis achieved by the provision of the instant defroster which is of a portable nature and is well adaptedto be Suspended from a suitable hanger adjacent the entrance to a dwelling, an important feature of the invention residing in the provision of an electrically actuated blower fan which is adapted to deliver a current of air through a duct containing an electric heating element, so that the current of air is heated and discharged from the device on the glasses or spectaoles which are to be defrosted.

Another feature of the invention resides in the provision of an automatic switch for controlling the operation of the blcwer fan as well as of the heating element, this being so arranged that the apparatus is automatically energized When it is removed from its suspension hanger, and conversely, energization of the apparatus ceases as soon as it is applied to its support.

Some of the advantages of the invention resde in its Simplicity of construction, in its convenient and eficient operation, and in its adaptability to economical manufacture.

With the above more important objects and features in View and such other objects and features as may become apparent as the specifica- P;

tion prooeeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in which:

Figure l is a side elevational view of the invention;

Figure 2 is a side elevational View, similar to that shown in Figure 1, but illustrating the invention as being partially broken away so as to reveal its construction;

Figure 3 is a front end View of the subject shown in Figure 1;

Figura 4 s a cross sectional detail of a suspension hook and switch bar used in the invention;

Figure 5 is a perspective view of the switch housing, and;

Figure 6 is a wiring diagram of the electrical Components of the invention.

Like characters of reference are employed to 2 designate like parts in the specifoaton and throughout the several-views. Referring now to the accompanying drawings in detail, the invention consists of a device for defrosting spectacles, eyeglasses, etc., this device being designated generally by the reference character i& and ernbodying` inits construction asuitable electrio motor !2 including an armature !4 on which is mounted a blower fan IS.

The underside of the motor 12 is equipped, in turn, with a suitable bracket [8 carrying a convenient handle 21? which is secured to the 'bracket l! by a single screw 22 so that the position of the 'handle relative to the motor maybe adjusted as desired. What may be referred to as a shroud 24 encloses the fan !E and consists of a substantially cylindri-:al body portion 26 which as a flared open end 28 spaced outwardly from the motor !2 so as to affcrd an air inlet passage 3!! for the shroud. A plurality of suitable brackets 32 secure the fiared portion 23 of the shroud to the motor !2, and the remaining end off the shroud body 26 is provided with a frusto-conical neck -34 which, in turn, is equipped with a longitudinally extending, tubular duet 353 which affcrdsan air outlet passage38`-for the shroud. i

A helical heating element 40 extends longitudinally in the passage 38 wherein it is supported at the end thereof by a pair of brackets 42, M, from which it will be apparent that when the motor !E and the element 40 are energized, a current of air will be drawn by the fan !6 through the inlet passage 30, through the shroud 2:3 and will be discharged through the outlet passage 33, during which stage the air current will become heated by the element 40 so that it may be eectively employed for spectacle defrosting purposes after it leaves the duct 36.

The devioe also embodies in its construction an automatic switch assembly 46 including a suitable housing 48 which is mounted on the motor !2, while a pair of mutually insulated contact points 58 are provided within the housing 48 and are adapted to be bridged" or electrically connected together by a transverse switch bar 52. The bar 52 is secured to the inner end portion of a suspension hook or eye 54 which is slidable and projects upwardly from the housing 48, whereby the entire apparatus may be conveniently Suspended from a suitable hanger 56 when the device is not in use (see Figure 3). However, a compression spring 58 is provided on the hook 54 between the inner surface of the housing 48 and the bar 52, whereby the bar is urged 3 in contact with the points 50 as soon as the apparatus is removed from the hanger 55, thus automatically closing the circuit through the switch and actuating the motor l2 as well as the element 40.

Neefclless to say, when the device is applied to the hengren. the weight thereo is suficient to compress'- the spring' 5.6 and separate the bar 52 from the points 50.

As best illustrated in the wiring diagram shown in Figure 6, the motor l2 and the element 40 arelconnected in parallel relation between the leads of a suitable extension cord 60.

The switch bar 52 is preferably cgnstructed from insulating material and has Secured to the l underside thereof a metallic strip 52 (see Fig ure 4) for bridging the contact points 50, a center portion of the. strip 62 being provided with an aperture or opening 64 to acconmodate a nut 66 which is also' ecured to the underside of the i Having. described the invention, what is claimed as new is::

1; In` a pcrtable device for defrosting spectacle' n electric moto nclu n armature shefi a ha d Se ured to t e motor, a shroud comprising a cylindrical body,` spaced brackets ecuring the c-ylindrioal body in spaced relation to= the motor said shaft projecting into the cylindrical body and having afan thereon, a* frustocenicalnecl; on the cylindrical body remote from the motor, a tubular duct extending` from the minor ,end of the: neck, an electrical heating element. within' and extending longitudinally of the tubula-r duct; a pair of electric leads with the motor' and the heating element' arranged' in electricai parallel therebetween, a' normally closed electric switch operatively disposed in one of said leads and secured to the motor, and a common means carried by the motor and operatively connected to the switch for suspending the motor from an overhead support and also for opening the switch when the motor is so Suspended.

a Por ab ice or de ros i e spectaoles, an, electrc motor including an armature shaft, a handle Secured to the motor, a shroud comprising a cylindrical body, spaced brackets ecuring the cylindrical body in spaced relation to the otor, said shaft projecting into the cy lindrical body 'and having a fan thereon, a frusto-conica-l neck on the cylindrical body remote from the motor, a tubular duet extending fron the mirror end of the neck, an electrical heating element within and extending longitudin-ally of the tubular duct, a pair of electric leads extending through the handle and terminatng at one end in a male p1ug,. said motor and the heating element being arranged in electrical parallel between the leads, an electr ic switch operativelyassociated with one of said leads .compr-ising a housing Secured to the top of the motor, a vertically disposed motor suspension member slidably projectin into said housi g, a movable contact bar fixed to the irner end of the member, a pair of fixed contacts disposed below and in the travel path of the movable contact, a coiled compression spring embracing the member and' seated between the top wall of the housing and the contact bar yieldingly urging' the bar towards the fixed Contacts to bridge the latter, said spring having a strengthless than the weightof the entire device; whereby the switch is opened when'the device is supported by the suspension member and closed when not sup.- ported by the latter.

ROBERT E. WERNER, Sa'.

REFEBENCES CITED The following' references are of record in the file of this' patent:

UNITED sTATEs PATENTS Number Name Date 4522831 Savage May '12, 71891 1 594906 Gross Aug. 3, 1926 29120332 Bichselet al. May 20, 1947 %32,067 Morse Dec. 2, 1947 

